| 摘要 |
PROBLEM TO BE SOLVED: To provide a building structure capable of securing a certain wall part on the side below a through-hole formed in a wall, while making an up-grade of piping small.SOLUTION: A building structure of the present invention includes: a top surface 1f of a first slab 1; a top surface 2f of a second slab 2 lower than the top surface 1f of the first slab; a wall 4 that is formed on the top surface 2f of the second slab; and a siphon drain pipe 20 that penetrates the wall 4a through the through-hole 4a formed in the wall 4. A height from the top surface 2f of the second slab at a lower end of the through-hole 4a is 30 mm or more.SELECTED DRAWING: Figure 2 |
